查看表的最后mysql修改时间 SELECT TABLE_NAME,UPDATE_TIME FROM information_schema.tables where TABLE_SCHEMA='database_name'; 通过查看数据库中表的最后更新时间。
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数据库 时间:
2015-01-26 16:38:33
阅读次数:
337
SELECT TABLE_NAME,round((DATA_LENGTH+INDEX_LENGTH)/(1024*1024),2) as 'size',TABLE_ROWS,ENGINE FROM information_schema.TABLES WHERE TABLE_SCHEMA="eload...
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数据库 时间:
2015-01-23 16:12:46
阅读次数:
153
SQl修改数据库架构名declare @name sysname declare csr1 cursor for select TABLE_NAME from INFORMATION_SCHEMA.TABLES open csr1 FETCH NEXT FROM csr1 INTO ...
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数据库 时间:
2015-01-16 18:43:23
阅读次数:
302
MYSQL查看和新增表分区1、查看表分区SELECT partition_name part, partition_expression expr, partition_description descr, FROM_DAYS(partition_description) lessthan_sendtime, table_rows FROM INFORMATION_SCHEMA...
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数据库 时间:
2015-01-12 14:42:26
阅读次数:
224
1.根据字段名,查找相关表--INFORMATION_SCHEMA.COLUMNSSELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE COLUMN_NAME='字段名' AND TABLE_CATALOG='DbName'2.根据存储过程名查找其源码,输出格...
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数据库 时间:
2015-01-12 14:34:44
阅读次数:
189
1:查询数据库dbName有多少张表
select count(*) from information_schema.tables where table_schema='dbName’;
2:根据某个字段合并表
select id,name,sum(operate) from test group by name;
执行结果:...
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数据库 时间:
2015-01-10 01:26:07
阅读次数:
185
--SQL Server 2005, 2008 or 2012:SELECT * FROM information_schema.tables--SQL Server 2000:SELECT * FROM sysobjects WHERE xtype='U' SELECT * FROM sysobj...
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数据库 时间:
2015-01-06 22:51:49
阅读次数:
352
SELECT COUNT(*) TABLES, table_schema FROM information_schema.TABLES WHERE table_schema = '数据库' GROUP BY table_schema;这还是头一次接触information_schema这个数据库,i...
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数据库 时间:
2015-01-04 09:51:46
阅读次数:
194
SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.columns WHERE TABLE_NAME='tablaname' AND COLUMNPROPERTY(OBJECT_ID('tablaname'),COLUMN_NAME,'IsIdentity')...
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数据库 时间:
2014-12-30 13:32:26
阅读次数:
149
问题描述:MySQL5.5.15原sql如下:selectconstraint_schema,table_name,constraint_name,constraint_typefrominformation_schema.table_constraintswheretable_schemanotin(‘information_schema‘,‘mysql‘,‘test‘,‘performance_schema’);不只是上面提到的table_constraints,..
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数据库 时间:
2014-12-26 14:55:10
阅读次数:
179